Rope Deflection with Partial Roundings for Load Suspension
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Solution Overview
Problem
Existing load suspension devices for heavy components, such as prefabricated concrete parts, often experience rope kinking and reduced load capacity when subjected to inclined pulls due to stress on the ropes, leading to potential damage.
Innovation Solution
The implementation of a rope deflection system with a curved design, featuring multiple partial roundings with varying radii, which distributes the rope's stress more evenly and prevents excessive loading, ensuring the rope remains fully loadable even at large pressure application angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single large-radius rounding is used in the rope deflection, then the rope is protected from kinking and damage, but the material consumption increases and the structure becomes less efficient
Solution Approach 1:
The rounding is divided into multiple partial roundings with different radii (first partial rounding with smaller radius, second partial rounding with larger radius). This segmentation allows the rope deflection to achieve adequate rope protection through the cumulative effect of multiple smaller curves, rather than requiring a single large-radius curve that would consume excessive material.
Solution Approach 2:
Different sections of the rope deflection are given different local properties - the first partial rounding has a smaller radius suitable for the initial rope contact area, while the second partial rounding has a larger radius for the subsequent rope path. This local differentiation optimizes material usage while maintaining effective rope protection throughout the deflection path.
2Loss of substance
If the rope deflection is designed with thin walls to save material, then material consumption decreases, but the structural strength and ability to prevent rope damage is compromised
Solution Approach 1:
The rope deflection is segmented into multiple partial roundings that work together to distribute and redirect rope forces. This segmentation allows thin-walled construction to be effective because the cumulative geometric configuration provides the necessary mechanical guidance and protection, compensating for the reduced individual section thickness.
Solution Approach 2:
The use of multiple curved partial roundings creates an optimized force distribution path for the rope. The curved geometry naturally guides the rope through a controlled deflection path, distributing stresses along the curved surfaces rather than concentrating them, which allows thin-walled construction to maintain adequate strength while minimizing material usage.
3Device complexity
If a single partial rounding is used in the rope deflection, then the structure is simpler, but the rope cannot be adequately protected from excessive loading at large pressure angles
Solution Approach 1:
The rope deflection is divided into multiple partial roundings that sequentially guide the rope through a controlled path. This segmentation allows the structure to handle large pressure application angles more effectively by distributing the deflection across multiple sections, preventing excessive loading on any single point while maintaining reasonable structural complexity.
Solution Approach 2:
The multiple curved partial roundings create a progressive force redistribution along the rope path. Each curved section gradually redirects the rope tension, preventing sudden sharp bends that would cause excessive loading. This curved geometry approach enhances reliability in handling inclined pulls while keeping the overall structure manageable in complexity.
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 3a~3b
AI summary
The invention relates to a load receiving means for attaching heavy building elements. Said means consists of at least one rope piece and a rope deflection which serves to deflect the rope piece protruding from the building element, in particular from the concrete, following a curvature.